1、BRITISH STANDARD AEROSPACE SERIESBS EN 4449:2005Aluminium alloy AL-P7050 T76 Sheet 0,8 mmkak6 mmThe European Standard EN 4449:2005 has the status of a British StandardICS 49.025.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36
2、g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4449:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 January 2006 BSI 12 January 2006ISBN 0 580 46327 3National forewordThis British Standard is the
3、official English language version of EN 4449:2005.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Subcommittee ACE/61/-/24, Light alloys, which has the responsibility to: A list of organizations represented on this su
4、bcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using th
5、e “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from le
6、gal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summa
7、ry of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME E
8、UROPENNE EUROPISCHE NORM EN 4449 August 2005 ICS 49.025.20 English Version Aerospace series - Aluminium alloy AL-P7050 - T76 - Sheet - 0,8 mm a 6 mm Srie arospatiale - Alliage daluminium AL-P7050 - T76 - Tles - 0,8 mm a 6 mm Luft- und Raumfahrt - Aluminiumlegierung AL-P7050 - T76 -Bleche - 0,8 mm a
9、6 mm This European Standard was approved by CEN on 22 April 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
10、references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN memb
11、er into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
12、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All
13、 rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4449:2005: E2 Contents Foreword 3 Introduction4 1 Scope .4 2 Normative references .4 BS EN 4449:20053 Foreword This document (EN 4449:2005) has been prepared by the European Association of A
14、erospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to
15、 CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. Attention is drawn to the possibility tha
16、t some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to
17、 implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Unite
18、d Kingdom. BS EN 4449:20054 Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies th
19、e requirements relating to: Aluminium alloy AL-P7050- T76 Sheet 0,8 mm a 6 mm for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, th
20、e latest edition of the referenced document (including any amendments) applies. EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use. EN 4400-2, Aerospace series Aluminium and aluminium alloy wrought products Technical
21、 specification Part 2: Sheet and strip. 1)EN 4500-2, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys. 1) 1) Published as AECMA Prestandard at the date of publication of this stan
22、dard. BS EN 4449:20055 1 Material designation Aluminium alloy AL-P7050- Others Element Si Fe Cu Mn Mg Cr Zn Zr Ti Each Total Al min. 2,0 1,9 5,7 0,08 2 Chemical composition % max. 0,12 0,15 2,6 0,10 2,6 0,04 6,7 0,15 0,06 0,05 0,15 Base 3 Method of melting 4.1 Form Sheet 4.2 Method of production Rol
23、led 4.3 Limit dimension(s) mm 0,8 a 6 5 Technical specification EN 4400-2 Delivery condition T76 6.1 Heat treatment 470 C 485 C / WQ 40 C + 115 C 125 C / 4 h t 24 h + 157 C 175 C / 8 h t 20 h 6.2 Delivery condition code U Use condition T76 7 Heat treatment Delivery condition Characteristics 8.1 Test
24、 sample(s) See EN 4400-2. 8.2 Test piece(s) See EN 4400-2. 8.3 Heat treatment Use condition. 9 Dimensions concerned mm 0,8 a 1,6 1,6 a 3,2 3,2 a 6 10 Thickness of cladding on each face % 11 Direction of test piece L LT L LT L LT 12 Temperature C Ambient Ambient Ambient 13 Proof stress Rp0,2MPa 460 4
25、60 470 470 480 480 14 Strength RmMPa 500 515 510 525 530 530 15 Elongation A50mm% 7 7 7 7 7 7 16 T Reduction of area Z % 17 Hardness 18 Shear strength RcMPa 19 Bending k 20 Impact strength 21 Temperature C 22 Time h 23 Stress aMPa 24 Elongation a % 25 Rupture stress RMPa 26 C Elongation at rupture A
26、 % 27 Notes (see line 98) BS EN 4449:20056 32 Electrical conductivity See EN 4400-2. 722,0 MS/m 24,5 MS/m 40 Fracture toughness (Kco) See EN 4400-2. 7 Dimensions (mm) T-L MPa m 0,8 a 3,2 60 3,2 a 6 50 44 External defects See EN 4400-2. 49 Exfoliation corrosion See EN 4400-2. 7 Exfoliation corrosion
27、shall not be greater than that of grade EA 82 Batch uniformity See EN 4400-2. 7 Electrical conductivity See EN 4400-2. or 145 (Typical value) Hardness HB 20 per product 30 per batch 95 Marking inspection See EN 4400-2. 96 Dimensional inspection See EN 4400-2. 98 Notes 99 Typical use BS EN 4449:20057
28、 100 Product qualification See EN 4400-2. Qualification programme to be agreed between manufacturer and purchaser. BS EN 4449:2005BS EN 4449:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It
29、presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of B
30、SI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20
31、8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer
32、 Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-.In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Stan
33、dards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on a
34、ll its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-.Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and
35、other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- information about BSI is available on the BSI website at ht
36、tp:/www.bsi-.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system
37、 or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.
